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Re: [Cbor] Do we care about array-tags issue 6, clamped-uint8 arrays?

Sean Leonard <dev+ietf@seantek.com> Thu, 25 July 2019 20:17 UTC

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From: Sean Leonard <dev+ietf@seantek.com>
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Date: Thu, 25 Jul 2019 16:17:43 -0400
Cc: Jeffrey Yasskin <jyasskin=40google.com@dmarc.ietf.org>, cbor@ietf.org
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To: Carsten Bormann <cabo@tzi.org>
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Subject: Re: [Cbor] Do we care about array-tags issue 6, clamped-uint8 arrays?
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> On Jul 25, 2019, at 12:50 AM, Carsten Bormann <cabo@tzi.org> wrote:
> 
> On Jul 24, 2019, at 19:53, Sean Leonard <dev+ietf@seantek.com> wrote:
>> 
>> having the tags assigned
> 
> Too late, they already are assigned.
> 
> (If you think this shouldn’t have happened, please consider the WG’s current stance on changing the IANA considerations on 1+1 tags away from specification required.)

Recognizing the lateness of the comment, and that they have already been assigned, I will not pursue it further—it’s fine.

This thread raises an interesting point, namely, using CBOR tags to identify the type of object in protocol that exists elsewhere in an object oriented system, such as in other standards or other implementations. “Uint8ClampedArray” does not exist in JSON, but it exists in JavaScript/ES6 (which is both a standard and is backed by multiple conforming implementations.) I think this is a good design pattern and should be liberally employed with more CBOR tag use.

Sean

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